... .Used by famous companies:Fine Cable,TYCO and Amphenol 3.RoHs standard ISO9001:2008 1,Name:Hex nut.2 ... RoHs.4,Surface treatment: nickel; also according to customers request.5,Should use: circular waterproof connectors, sensing connectors, needle flange ... production and processing, and through the strict supervision and inspection.3, one-piece elegant design simplified installation, reduce assembly time. ...